Methods The carotenoids and vitamins were determined by HPLC or colorimetric method, amino acids were analyzed by amino acid analyze.

• 方法类胡萝卜素、维生素根据具体成分性质选用比色法和高效液相色谱法(HPLC);氨基酸的分析由日立835-50型氨基酸分析仪完成;